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Detailed information about the leg muscles, including their origin, insertion, action, and comments on the rectus femoris, biceps femoris, vastus lateralis, vastus medialis, semitendinosus, and semimembranosus. Understanding the anatomy of these muscles is essential for medical professionals, athletes, and individuals interested in physiology.
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Typology: Slides
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Rectus femoris Biceps femoris Vastus lateralis Semitendinosus Vastus medialis Semimembranosus Vastus intermedius
Anterior inferior iliac spine
Tibial tuberosity
Extend knee Flex hip
Crosses 2 joints, hip and knee Sometimes injection site
RECTUS FEMORIS
Greater trochanter
Tibial tuberosity
Extends knee
Lateral aspect of thigh Sometimes injection site
VASTUS LATERALIS
Linea aspera of femur
Tibial tuberosity
Extends knee
VASTUS MEDIALIS
Ischial tuberosity - LH Linea aspera - SH Distal femur - SH
Head of fibula and tibia
Flexes knee Extends and adducts hip Laterally rotate thigh
Most lateral of group 2 heads
BICEPS FEMORIS
BICEPS FEMORIS
SEMITENDINOSUS
Ischial tuberosity
Medial condyle of tibia
Flexes knee Extends thigh
Deep to semitendinosus
SEMIMEMBRANOSUS
HAMSTRING GROUP